Proceedings of the 2024 10th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2024)

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Optimization of Borehole Thermal Energy Storage Operating Parameters for 1000 m Deep Medium- shallow Geothermal Wells

Authors
Chao Zhu1, Yafei Xin1, Le Dong1, Jingxuan Zhao1, Ziyu Chen1, Tuo Zhang1, Yifei Qu2, *, Fenghao Wang2
1State Grid Shaanxi Electric Power Research Institute, Xi’an, Shaanxi, 710100, China
2School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi, 710049, China
*Corresponding author. Email: yifeiquxjtu@foxmail.com
Corresponding Author
Yifei Qu
Available Online 9 May 2025.
DOI
10.2991/978-94-6463-708-3_40How to use a DOI?
Keywords
Medium and shallow geothermal energy; coaxial cased heat exchanger; borehole thermal energy storage (BTES); thermal storage efficiency
Abstract

Borehole thermal energy storage system can store thermal energy by adopting the existing borehole heat exchangers, which reduces the cost of constructing the storage system and facilitates the long-term stable operation of borehole heat exchangers. In this paper, the operating parameters of a medium-shallow borehole heat exchanger with depth of 1000 m are optimized for achieving borehole thermal energy storage purposes. The heat source is 65 ℃ hot water provided by a photovoltaic solar thermal system, and the optimized parameters include heat storage flow rate and heat storage time. The results show that the smaller the heat storage flow rate, the higher the energy storage efficiency, but the less heat is stored; the heat storage time has a small impact on the heat storage efficiency, basically maintained at about 36%. The research in this paper clarifies the influence of each operation parameter on the performance of the borehole thermal energy storage system, which brings references for the similar borehole thermal energy storage system.

Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2024 10th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2024)
Series
Atlantis Highlights in Engineering
Publication Date
9 May 2025
ISBN
978-94-6463-708-3
ISSN
2589-4943
DOI
10.2991/978-94-6463-708-3_40How to use a DOI?
Copyright
© 2025 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Chao Zhu
AU  - Yafei Xin
AU  - Le Dong
AU  - Jingxuan Zhao
AU  - Ziyu Chen
AU  - Tuo Zhang
AU  - Yifei Qu
AU  - Fenghao Wang
PY  - 2025
DA  - 2025/05/09
TI  - Optimization of Borehole Thermal Energy Storage Operating Parameters for 1000 m Deep Medium- shallow Geothermal Wells
BT  - Proceedings of the 2024 10th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2024)
PB  - Atlantis Press
SP  - 365
EP  - 375
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-708-3_40
DO  - 10.2991/978-94-6463-708-3_40
ID  - Zhu2025
ER  -